I thought that because I "figured" the women did not work or were rich, that that was prejudging them, which would make it a bias. But the word "assume" seemed to fit, too. (I've learned that to assume is to make an "a$$" out of "u" and "me," so either way - it wasn't good.) So I looked them up in my huge American Heritage dictionary I have on the shelves. Here are the definitions that fit this idea, along with "prejudice" and "stereotype," as these will come into play.
When I immediately thought the women must not work, and must be rich... was it all four of these? Please share your comments below, so my future reflections on my biases can reflect my learning, as well!